Arrange the following in the decreasing order (most important first) of their important, for the welfare of human society. Give reasons for your answer,Biogas, citric acid, Penicillin and curd.

Arrange the following Lewis acids in the increasing order of acidic strength. Substantiate your answer. BF_3 , BCl_3 , BBr_3 .

Arrange benzene, n-hexane and ethyne in the decreasing order of acidic behaviour. Also give reason for this behaviour.

Two dice are thrown. The events A , B and C are as follows. A : getting an even number on the first die B : getting an odd number on the first die. C : getting the sum of the number on the dice le 5 state true or false ( give reason for yours answer). A and C are mutually exclusive.

Two dice are thrown. The events A , B and C are as follows. A : getting an even number on the first die B : getting an odd number on the first die. C : getting the sum of the number on the dice le 5 state true or false ( give reason for yours answer). A', B' , C are mutually exclusive and exhaustive.

Two dice are thrown. The events A , B and C are as follows. A : getting an even number on the first die B : getting an odd number on the first die. C : getting the sum of the number on the dice le 5 state true or flase ( give reason for yours answer) A and B are mutually exclusive and exhaustive.

Two dice are thrown. The events A , B and C are as follows. A : getting an even number on the first die B : getting an odd number on the first die. C : getting the sum of the number on the dice le 5 state true or flase ( give reason for yours answer). A = B'.

Diborane is an important hydride of Boron a. During a class room discussion, a student argues that there is a covalent bond between boron atoms in diborane. What is your opinion. Give justification. b. Boron halides can act as Lewis acids. Give reason. c. Arrange the following Lewis acids in the increasing order of acidic strength. Substantiate your answer? 'BF_3 BCl_3, BBr_3'

In a classroom discussion about order and moleculrity of a reaction,Ramu argued that ''there are reactions which appear to be of higher order but actually follows first order kinetics''How far is his statement true? Give your opinion in this regard. Justify your answer using suitable example.